Fundamental interactions between polymeric superplasticizers and cement are studied. Cements with different alite-, belite-, C3Aand C4AF-contents are used. The use of commercially available superplasticizers like melamine formaldehyde sulfite(MFS) and β-naphthalene sulfonic acid formaldehyde-(NSF) resins is investigated. These superplasticizers (industrial products) are characterized by means o...

Jute is one of the available and cheap cellulosic fibers that can be printed used instead other materials may relatively high in price. bio-degradable raw therefore does not cause harm to environment along with advantages because its many advantages, it called golden fiber. Textile printing practice applying color distinct patterns or designs sharp outlines. Inappropriately fibers, tied fiber, ...

In this study, the impact bending strengths and specific impact bending strengths were determined for solid wood and laminated veneer lumber (LVL) produced from eucalyptus (Eucalyptus grandis W. Hill ex Maiden), poplar (Populus x euramericana I-214), and beech (Fagus orientalis L.) woods using urea formaldehyde (UF), melamine urea formaldehyde (MUF), and phenol formaldehyde (PF) adhesives. The ...

Embedding melamine-formaldehyde (MF) resin-coated shellac microcapsules in waterborne coatings can extend the service longevity of on a wood surface to certain extent. Due content limitation self-repairing coatings, effective self-healing performance time is short. With aim improving properties Microberlinla sp substrate, more mechanism was achieved by impregnating ebony substrate several times...

With the development of economy and science technology, people put forward higher standards for performance surface coating wood products, which requires us to carry out innovative research on coating. In this work, a kind microcapsule was prepared with melamine-formaldehyde resin/rice husk powder as wall material epoxy resin core material. The microcapsules were added waterborne acrylic accord...

We have successfully synthesized relatively monodisperse and cross-linked melamine-formaldehyde (MF) microspheres by dispersed polycondensation and subsequent pH adjustment with serum replacement cleaning. The average particle sizes ( : weight-average and : number-average), the polydispersity index ( ), the number of particles Np, and the gel content of the M-F microspheres were observed by var...

In this study, we determined the flexural properties and tensile shear strength of five-ply plywood panels produced with eucalyptus (Eucalyptus grandis), beech (Fagus orientalis), and hybrid poplar (Populus x euramericana) using urea-formaldehyde (UF), melamine-urea-formaldehyde (MUF) and phenol-formaldehyde (PF) adhesives. Flexural properties were tested on both parallel and perpendicular to g...

The manufacturing of novel melamine-formaldehyde rigid foam material, by blowing the (MF) resin emulsion with pentane and further catalytic thermal curing, is presented in this work. process foaming described terms particular parameters, which are; proportions blowing, emulsifying agents. examination foam, SEM images, shows that pore sizes are range from 150 to 250 µm. characterization obtained...